Free Everyday Calculators
Free everyday calculators — age, percentage, GPA, dates, and more. Quick, accurate answers for daily math, right in your browser.
Age Calculator
Find your exact age in years, months, and days from your date of birth, plus your next birthday countdown.
Percentage Calculator
Work out percentages every way — X% of Y, what percent X is of Y, and percentage increase or decrease.
GPA Calculator
Calculate your grade point average from course grades and credit hours on a 4.0 scale.
Tip Calculator
Work out the tip and split the bill between any number of people, with custom tip percentages.
Discount Calculator
Find the sale price and how much you save from an original price and a percentage or fixed discount.
Time Card Calculator
Add up daily clock-in and clock-out times with breaks to get weekly hours, overtime, and gross pay.
Scientific Calculator
A full scientific calculator with trig, logarithms, powers, roots, parentheses, and memory.
Date Duration Calculator
Count the days, weeks, and months between two dates, or add and subtract days from a date.
Fuel Cost Calculator
Work out the fuel cost of a trip from distance, fuel efficiency, and the price per litre or gallon.
Aspect Ratio Calculator
Solve for a missing width or height while keeping an aspect ratio like 16:9, 4:3, or a custom one.
Grade Calculator
Calculate your weighted course grade from assignment scores and their weights.
Final Grade Calculator
Find the score you need on the final exam to reach your target course grade.
Timer & Stopwatch
A free online countdown timer with alarm and a stopwatch with lap times — runs in your browser.
Online Calculator
A simple, fast online calculator for everyday math with keyboard support and memory keys.
Time Calculator
Add or subtract hours, minutes, and seconds — and convert between time units.
Average Calculator
Calculate the mean, median, mode, range, and sum of a list of numbers.